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Mystery Sack is an unlockable passive item.
Effects
- Spawns a familiar that follows Isaac around and has a chance to drop a heart, coin, bomb, or key (or any of their variations) after clearing a room.
Notes
- Prior to patch 1.04, this item did not drop any items, or do anything at all.
In-game Footage
Seeds
Template:PlatPC A3ES 1TQN (First floor, Treasure room next to spawn) Template:PlatPC QHKQ ZE4N (First floor, Treasure room next to spawn) Template:PlatPS4 CGVC XKY3 (Play as Isaac, and reroll the first item in the secret room just below the starting room) Template:PlatVita Q73A BMMP (adjacent to starting room) Template:PlatSwitch Template:GreedMode 3CAR V7Z0 (First Golden Treasure Room)
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